Steering Gear: Description and Operation

GEAR - LINK/COIL

DESCRIPTION





The power steering gear is a recirculating ball type gear (6). The gear ratios used are 12.5:1.

OPERATION
The gear acts as a rolling thread between the worm shaft and rack piston. The worm shaft is supported by a thrust bearing at the lower end and a bearing assembly at the upper end. When the worm shaft is turned from input from the steering column the rack piston moves. The rack piston teeth mesh with the pitman shaft. Turning the worm shaft, turns the pitman shaft, which turns the steering linkage.